variants or D-day
: a day set for launching an operation
specifically : June 6, 1944, on which Allied forces began the invasion of France in World War II

Examples of D-Day in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In the meantime, China has ramped up production of assets designed for what would be the most complex maritime invasion since the Allies’ D-Day landing in 1944. Micah McCartney, MSNBC Newsweek, 30 Sep. 2025 They were buried side-by-side in the Normandy American Cemetery overlooking Omaha Beach, scene of, by far, the bloodiest battle of D-Day. Hank Beckman, Chicago Tribune, 26 Aug. 2025 His viral videos include a retelling of his experience in Normandy on D-Day, stories about their family history and other details about Jake's time stationed in Northern Ireland during WWII. Zoey Lyttle, People.com, 21 July 2025 His interview on D-Day by CNN's Christiane Amanpour won an Emmy award in June. Chandelis Duster, NPR, 20 July 2025 See All Example Sentences for D-Day

Word History

Etymology

D, abbreviation for day

First Known Use

1918, in the meaning defined above

Time Traveler
The first known use of D-Day was in 1918

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Cite this Entry

“D-Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/D-Day. Accessed 9 Oct. 2025.

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